But, I don't think those in the screenshot are really loaded with 3000 btc.
Why no? This screenshot can be from 2010-2011.
With the a "search by image" google search, it seems that pic first appeared in Feb 2014.
And if it is loaded, I would assume the owner would be more careful in covering the private key on the first piece of paper.
Its not a real image. Its giving an idea about paper wallet. That you can store your btc in paper wallet for more security.